Library /sys$common/syshlp/sysmanhelp.hlb DISKQUOTA, ENABLE, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The DISKQUOTA ENABLE command reinstates the enforcement of
    quotas on a volume that had been suspended with the DISKQUOTA
    DISABLE command. Whenever you enable quotas on a volume, use the
    DISKQUOTA REBUILD command to update UIC entries and usage counts.